/* EXTERN is defined as extern except in global.c */
#ifdef  GLOBAL_VARIABLES_HERE
#undef  EXTERN
#define EXTERN      /* 定义为空值 */
#endif

EXTERN  int     disp_pos;
EXTERN  u8      gdt_ptr[6]; /* 0~15:Limit  16~47:Base */
EXTERN  DESCRIPTOR  gdt[GDT_SIZE];
EXTERN  u8      idt_ptr[6]; /* 0~15:Limit  16~47:Base */
EXTERN  GATE    idt[IDT_SIZE];
